@Edgod ...thanksHrmm...that sounds like a distinct possibility. I had that problem with Sublime and found that Repl.it handled the same code that erred out in my local command line with ease...but I have noticed some shifts and changes over the years that were equally hard to diagnose. I might do a quick double/triple/quadruple check in PyCharm.... Thanks for understanding Edgod, people forget it's hard on teachers to juggle all that we do and then troubleshoot things that should work and are only just frustrating the kids to the point they give up and walk away from the awesome potential of the profession. People ask me how to get kids 'interested' STEM and I tell them bluntly "get in here and help more".